Question

решите уравнения.
(x-1)(x-7)=0
(x+2)(x-9)=0
(x-11)(x+6)=0​

Answer 1

Ответ:

1) (x-1)(x-7)=0

x-1=0

x-7=0

x=0

x=7

X1 = 1; X2 = 7

2) (x+2)(x-9)=0

x+2=0

x-9=0

x=-2

x=9

X1 = -2; X2 = 9

3) (x-11)(x+6)=0

x-11=0

x+6=0

x=11

x=-6

X1 = -6; X2 = 11

Удачи!